Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region
The region of Magallanes has the world’s largest sub-Antarctic environments, including the heterogeneous habitats of archipelagos, fjords, channels, and inlets formed by ice advancing and retreating during Quaternary glacial processes. In marine ecosystems, the temperature, salinity, and photoperiod...
Published in: | Journal of Applied Phycology |
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Online Access: | http://hdl.handle.net/10261/204055 https://doi.org/10.1007/s10811-018-1693-x https://doi.org/10.13039/501100002850 https://doi.org/10.13039/501100008792 |
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ftcsic:oai:digital.csic.es:10261/204055 2024-02-11T09:57:22+01:00 Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region Rodríguez, Juan Pablo Terrados, Jorge Rosenfeld, S. Méndez, F. Ojeda, J. Mansilla, Andrés Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) Universidad de Magallanes (Chile) 2019 http://hdl.handle.net/10261/204055 https://doi.org/10.1007/s10811-018-1693-x https://doi.org/10.13039/501100002850 https://doi.org/10.13039/501100008792 unknown Springer Nature Postprint http://doi.org/10.1007/s10811-018-1693-x Sí Journal of Applied Phycology 31: 915-928 (2019) 1573-5176 http://hdl.handle.net/10261/204055 doi:10.1007/s10811-018-1693-x 0921-8971 http://dx.doi.org/10.13039/501100002850 http://dx.doi.org/10.13039/501100008792 open Phaeophyta Environmental heterogeneity Salinity Temperatures Sub-Antarctic region Chile artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.1007/s10811-018-1693-x10.13039/50110000285010.13039/501100008792 2024-01-16T10:50:08Z The region of Magallanes has the world’s largest sub-Antarctic environments, including the heterogeneous habitats of archipelagos, fjords, channels, and inlets formed by ice advancing and retreating during Quaternary glacial processes. In marine ecosystems, the temperature, salinity, and photoperiod are key parameters which delimit the survival, reproduction and development of the macroalgae and, therefore, the biogeography of numerous sub-Antarctic species. In this research, we compare the reproductive development patterns in spores of Macrocystis pyrifera coming from places with different salinities along longitudinal and latitudinal gradients in Skyring Sound, Otway Sound, the Strait of Magellan (Possession Bay and Puerto del Hambre), and the Beagle Channel (Paula Bay). Laboratory analyses included four salinities and two different temperatures, comparing the percentage of spore germination, sex ratio in females and male gametophytes, and the development of gametogenesis through the proportion of gametophytes and sporophytes, with a factorial experimental design. The best germination percentages were obtained in Puerto del Hambre; the best sex ratio, on the other hand, was in Skyring Sound; finaly, for gametogenesis development, the best results were obtained in Otway Sound and Possession Bay. We prove the temperature and salinity effect over the studied population; moreover, these results demonstrate that at the end of the cycle each population develops more effectively in their local conditions, evidence of a local adaptation in M. pyrifera populations living in contrasting sites in the same region. This is crucial to understand how these populations react to the effect of environmental stressors; furthermore, the selection of appropriate conditions is also an important factor for the future commercial cultivation management of these important macroalgae. The authors wish to thank project FONDECYT 1140940 “Macroalgal adaptive radiation: potential links to ecological niche diversity in the ecoregion of ... Article in Journal/Newspaper Antarc* Antarctic Digital.CSIC (Spanish National Research Council) Antarctic Magallanes ENVELOPE(-62.933,-62.933,-64.883,-64.883) Possession Bay ENVELOPE(-37.133,-37.133,-54.094,-54.094) Journal of Applied Phycology 31 2 915 928 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Phaeophyta Environmental heterogeneity Salinity Temperatures Sub-Antarctic region Chile |
spellingShingle |
Phaeophyta Environmental heterogeneity Salinity Temperatures Sub-Antarctic region Chile Rodríguez, Juan Pablo Terrados, Jorge Rosenfeld, S. Méndez, F. Ojeda, J. Mansilla, Andrés Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region |
topic_facet |
Phaeophyta Environmental heterogeneity Salinity Temperatures Sub-Antarctic region Chile |
description |
The region of Magallanes has the world’s largest sub-Antarctic environments, including the heterogeneous habitats of archipelagos, fjords, channels, and inlets formed by ice advancing and retreating during Quaternary glacial processes. In marine ecosystems, the temperature, salinity, and photoperiod are key parameters which delimit the survival, reproduction and development of the macroalgae and, therefore, the biogeography of numerous sub-Antarctic species. In this research, we compare the reproductive development patterns in spores of Macrocystis pyrifera coming from places with different salinities along longitudinal and latitudinal gradients in Skyring Sound, Otway Sound, the Strait of Magellan (Possession Bay and Puerto del Hambre), and the Beagle Channel (Paula Bay). Laboratory analyses included four salinities and two different temperatures, comparing the percentage of spore germination, sex ratio in females and male gametophytes, and the development of gametogenesis through the proportion of gametophytes and sporophytes, with a factorial experimental design. The best germination percentages were obtained in Puerto del Hambre; the best sex ratio, on the other hand, was in Skyring Sound; finaly, for gametogenesis development, the best results were obtained in Otway Sound and Possession Bay. We prove the temperature and salinity effect over the studied population; moreover, these results demonstrate that at the end of the cycle each population develops more effectively in their local conditions, evidence of a local adaptation in M. pyrifera populations living in contrasting sites in the same region. This is crucial to understand how these populations react to the effect of environmental stressors; furthermore, the selection of appropriate conditions is also an important factor for the future commercial cultivation management of these important macroalgae. The authors wish to thank project FONDECYT 1140940 “Macroalgal adaptive radiation: potential links to ecological niche diversity in the ecoregion of ... |
author2 |
Fondo Nacional de Desarrollo Científico y Tecnológico (Chile) Universidad de Magallanes (Chile) |
format |
Article in Journal/Newspaper |
author |
Rodríguez, Juan Pablo Terrados, Jorge Rosenfeld, S. Méndez, F. Ojeda, J. Mansilla, Andrés |
author_facet |
Rodríguez, Juan Pablo Terrados, Jorge Rosenfeld, S. Méndez, F. Ojeda, J. Mansilla, Andrés |
author_sort |
Rodríguez, Juan Pablo |
title |
Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region |
title_short |
Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region |
title_full |
Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region |
title_fullStr |
Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region |
title_full_unstemmed |
Effects of temperature and salinity on the reproductive phases of Macrocystis pyrifera (L.) C. Agardh (Phaeophyceae) in the Magellan region |
title_sort |
effects of temperature and salinity on the reproductive phases of macrocystis pyrifera (l.) c. agardh (phaeophyceae) in the magellan region |
publisher |
Springer Nature |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/204055 https://doi.org/10.1007/s10811-018-1693-x https://doi.org/10.13039/501100002850 https://doi.org/10.13039/501100008792 |
long_lat |
ENVELOPE(-62.933,-62.933,-64.883,-64.883) ENVELOPE(-37.133,-37.133,-54.094,-54.094) |
geographic |
Antarctic Magallanes Possession Bay |
geographic_facet |
Antarctic Magallanes Possession Bay |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Postprint http://doi.org/10.1007/s10811-018-1693-x Sí Journal of Applied Phycology 31: 915-928 (2019) 1573-5176 http://hdl.handle.net/10261/204055 doi:10.1007/s10811-018-1693-x 0921-8971 http://dx.doi.org/10.13039/501100002850 http://dx.doi.org/10.13039/501100008792 |
op_rights |
open |
op_doi |
https://doi.org/10.1007/s10811-018-1693-x10.13039/50110000285010.13039/501100008792 |
container_title |
Journal of Applied Phycology |
container_volume |
31 |
container_issue |
2 |
container_start_page |
915 |
op_container_end_page |
928 |
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1790609663601934336 |